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Hybrid bipolar plate for fuel cell

A technology of bipolar plates and cathodes, applied in the direction of fuel cells, fuel cell components, circuits, etc.

Pending Publication Date: 2020-04-17
JIANGSU QINGNENG NEW ENERGY TECHNOLOGIES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, none of these known bipolar plates retains the advantages of combining a shaped cathode half-plate with a stamped metal anode half-plate as disclosed herein

Method used

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  • Hybrid bipolar plate for fuel cell
  • Hybrid bipolar plate for fuel cell
  • Hybrid bipolar plate for fuel cell

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Embodiment Construction

[0046] The following description is merely exemplary in nature and is not intended to limit the invention, application or uses. It should also be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features. With respect to the methods disclosed, the steps presented are exemplary in nature and thus not required or critical.

[0047] For simplicity, here only refer to figure 1 Two cell stacks (ie one bipolar plate) are shown and described with the understanding that a typical stack will have many more such cells and bipolar plates.

[0048] figure 1 A two-cell PEM fuel cell stack 2 is depicted having a pair of membrane electrode assemblies (MEAs) 4 , 6 , hereinafter also referred to as bipolar plate assemblies 200 , separated from each other by an electrically conductive fluid distribution element 8 . The MEA4,6 comprises a membrane-electrolyte layer with an anode and a cathode, with catalysts on opposite sides o...

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Abstract

The invention discloses a hybrid bipolar plate assembly for a fuel cell, which includes a shaped cathode half plate and a stamped metal anode half plate. The stamped metal anode half plate is nested and fixed on the shaped cathode half plate. Each half plate has a reactant side and a coolant side, a feed region, and a header having a plurality of header holes. The coolant side of the shaped cathode half plate has support features that may be different from and do not need to correspond to cathode channels formed on the opposing reactant side. The coolant side of the stamped metal anode half plate has a platform corresponding to an anode channel formed on the opposite oxidant side. The platform defines a plurality of coolant channels on the coolant side of the stamped metal anode half plateand abuts against the coolant side of the shaped cathode half plate.

Description

technical field [0001] The present invention relates to fuel cell stacks, and more particularly, to bipolar plate assemblies for fuel cell stacks. Background technique [0002] Fuel cells have been proposed as clean, efficient and environmentally responsible power sources for a variety of industries, including manufacturing centers, homes and electric vehicles, among other applications. [0003] An example of a fuel cell is a proton exchange membrane (PEM) fuel cell. A PEM fuel cell comprises a membrane-electrode-assembly (MEA), which typically has a thin solid polymer membrane-electrolyte with an anode and a cathode, with catalysts on opposite sides of the membrane-electrolyte. MEAs are typically disposed between a pair of porous conductive materials, also known as gas diffusion media, which distribute gaseous reactants such as hydrogen and oxygen or air to the anode and cathode layers. The hydrogen reactant is introduced at the anode, and an electrochemical reaction occu...

Claims

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Application Information

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IPC IPC(8): H01M8/0258H01M8/0267H01M8/021H01M8/0213H01M8/0276H01M8/2483H01M8/241
CPCH01M8/0258H01M8/0267H01M8/021H01M8/0213H01M8/0276H01M8/2483H01M8/241Y02E60/50H01M8/0228H01M8/026H01M8/0273H01M2008/1095H01M8/242H01M8/04067H01M8/04701
Inventor 顾志军陈杰
Owner JIANGSU QINGNENG NEW ENERGY TECHNOLOGIES CO LTD
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